cm 871 hard starting cold

Discussion in 'Kenworth Forum' started by hemiguy, Jan 27, 2014.

  1. Jan 27, 2014 #1
    hemiguy

    hemiguy Bobtail Member

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    Dec 11, 2013
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    2008 cm 871 deleted all of a sudden it is hard to start cold like outside crank and crank All of a sudden fuel is running down the filter but it won't start.finally i put my foot to the floor and it started.we had it in the shop for 3 nights to see if we could isolate the problem but low and behold in the warm shop it would start just fine.put it outside and the next morning I had to crank it lots same issues . Held my foot to the floor cranked it til it started. Please help would like to solve this
     
    hemiguy, Jan 27, 2014
    hemiguy, Jan 27, 2014
    #1
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  3. Jan 27, 2014 #2
    vikingswen

    vikingswen Road Train Member

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    Sounds like you might be loosing your prime due to a cold weather leak. I would start out checking all fuel hoses and connections. Also if you still have the original fuel hoses it might be time to replace them due to age since they might be breaking down internally.

    Good luck
     
    vikingswen, Jan 27, 2014
    vikingswen, Jan 27, 2014
    #2
  4. Jan 27, 2014 #3
    baha

    baha Road Train Member

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    If fuel is running down the filter the gasket is hard from cold, replace filter then try next time and see if cheap fix works.
     
    baha, Jan 27, 2014
    baha, Jan 27, 2014
    #3
  5. Jan 27, 2014 #4
    jameslawton

    jameslawton Light Load Member

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    there is a electric primer pump on that engine my guess is it is bad if you can't hear it whenever u turn key on check it out has a fuse and relay that goes to it but it is pretty common for them to go out
     
    jameslawton, Jan 27, 2014
    jameslawton, Jan 27, 2014
    #4
  7. Jan 28, 2014 #5
    hemiguy

    hemiguy Bobtail Member

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    Dec 11, 2013
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    Thanks for the input boys changed fuel filter still nothing put a big heater on it And poof it started after a hour later we did a block and pan heater test in the shop and the block heater does not work so change that out tomorrow all should be good thanks
     
    hemiguy, Jan 28, 2014
    hemiguy, Jan 28, 2014
    #5
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